Optical telecommunications method

Details Optical telecommunications method Optical telecommunications method

1993-03-18

1995-08-15

Boudreau, Leo H.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359161, 359183, 359173, H04J 1402, H04B 1000

Patent

active

054424739

ABSTRACT:
A phase-modulated carrier wave is injected into a line fiber (4) by a semiconductor laser source (8, 10) to carry digital data to be transmitted. An optimum value for a permanent parameter of the carrier wave, in particular the phase deviation thereof, must be redefined from time to time because of drift in the characteristics of the source. This is done on the basis of the variations in the power of a diffracted wave that is caused to return via the fiber by Brillouin scattering in response to an incident wave emitted for this purpose by the same source. Application to telecommunications networks.

REFERENCES:
patent: 4005935 (1977-02-01), Wang
patent: 4980891 (1990-12-01), Isadpanah

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